Attrition-mill plate



J. J. CZAREV.

ATTRITION MILL PLATE. APPucATloN Flu-:D Nov.s,1919.

Patented Feb. 15, 1921.

2 SHEETSSHEET I.

J. 1. CZAREM A ATTRITLON MILL PLATE. APPLICATION min Nov.. s. 1919.

Patented Feb. 15,1921.

2 sHEETs-sHEE'T'z.

PATENT OFFICE.

JOHN J'. GZAREV, OF VVESI ALLIS, WISCONSIN.

ATTRITON-MILL PLATE.

Application filed November 6, 1919.

To all tc/tom` z'zf may concern.'

Be it known that JOHN J. Czannv, a citizen of the United States, residing at Viest Allis, in the county of Milwaukee, State ofi lvisconsin, have invented a new and useful Attrition-Mill Plate; and I do hereby declare the following to be a toll, clear, and exact description ot' the invention, such as will enable others skilled in the art to which it appertains to malte and use the same.

The invention relates to plates for attrition mills and has for its object to provide the plate and the bed on which it rotates with a series of radially disposed Zig Zag ribs so that there will be a cutting or grinding etlect upon the grain for the entire length ot said ribs. Also to provideangularly arranged ribs connecting the zig zag ribs near the outer ends thereof, which angularly arranged ribs form what is known as check ribs for preventing the too rapid movement of the grain from between the plate and its bed. Also to so arrange the check ribs so that they will not only pert'orm their function of retarding and checking the too rapid movement of the ground material but will also form means for cutting and shearing the material..

With the above and other objects in view the invention comprises further features and combination of parts as hereinafter set forth, shown in the drawings and claimed,

it being understood that changes in the precise embodiment of the invention may be made within the scope ot what is claimed without departing from the spirit of the invention.

In the drawings Figure 1 is a plan view of the rotatable plates, the top plate being broken away to show the rib arrangement on the bottom or bed plate.

F ig. 2 is a side view of the plate and bed with parts broken away to show the construction of the frames for holding the plates.'

Fig. 3 is a perspective view of the ribs on the bed plate, the top plate being broken away.

Referring to the drawings,the numeral 1 designates the lower bed disk to which grinding plates are secured and 2 the upper disk to which grindingplates are also secured. The upper and lower grinding plates 3 and 4f are formed from a series of segmentally Specification of Letters Patent.

Patented Feb. 15, 1921.

seran No. 336,020.

shaped sections 5, any number of which may be used according to the diameter of the mill. The upper and lower plates 3 and L1- are provided with a plurality of substantially radially arranged zig zag ribs 6, terminating intermediate the edges of the plates, there being a similarly shaped rib disposed between each of the ribs 6, however the ribs 7 are shorter than the ribs 6 but the angular corners S therein are concentric with the angular corners 9 in the ribs 6. Extending from the end of each rib 7 is an angularly arranged rib 10. The ribs 10 are joined to the ribs 6 as at 11 and 12, therebyT forming what is lrnown as checking ribs, by means ci which the rapid feeding oi' the material outwardly during the grinding operation will be prevented, said ribs also by their angular positions are in a position where they will also shear and grind theV grain. Extending outwardly from the zig Zag ribs (i are ribs 13 which are substantially parallel to the check ribs 10. The ribs 13 by their angular position forming additional means for cutting and grinding the material before the same passes from between the grinding pla-te.

By referring to Fig. 1 it will be seen that the dotted lines indicated at Av show the ribs as arranged on the upper plate 3, which upper plate 3 is adapted to revolve in the direction of the arrow ZJ and the lower or bed plate may be a stationary one or may he revolved in the opposite direction. it will be seen that when the upper plate 3 is moved in the direction of the arrow that the zig zag ribs 6 will overlap each other thereby forming diamond shaped pockets substantially radially of the plate thereby forming shearing edges that will shear at all times during the rotation ot' the plate therefore assuring the maximum grinding efficiency and also by means of the check ribs 10 and the additional ribs 13 substantially parallel thereto, the outward movement of the material which is being ground between the plates is retarded so that it will be thoroughly ground before passing from between the plates. Each section 5 of the plates 3 and 4 is secured by means of bolts 14; to the upper disk 1 and the lower disk 2.

From the above it will be seen that an attrition mill plate is provided wherein the maximum shearing of the ribs is attained and vwherein said ribs shear and grind the grain throughout their entire length. It will also be seen that by the provision of the angularly arranged check ribs that said ribs will not only perform the checking of the too rapid outward movement of the material but they Will also perform the additional grinding function. The invention having been set forth what is claimed as new and useful is A mill plate comprising a circular body, said circular' body on one of its faces being provided with angular shaped grinding ribs, said ribs extending outwardly at an acute angle to a radial line and thence in reverse direction at an angle to the radial line of the plate alternate grinding ribs terminating adjacent the outer edge of the plate and spaced therefrom, the intermediate grinding ribs terminating a greaterdistance from the edge of the plate, the angling point of the grinding ribs being concentric in relation to the center' of the plate, cheek ribs extending from the edge of the'plate and merging into the alternate and intermediate ribs and thev outer angled portion of the alternate ribs intermediate their length and se'ondary Check ribs extending inwardly from the edge of the plate between the first mentioned check ribs and merging into the outer angled portion of the alternate ribs intermediate their ends.

in testimony whereof I have Signed my name to this specification in the presence of two subscribing Witnesses.

JGHN J. CZAREV.

VVitn esses J. L. LnAoi-i, E. 4K. STEUL. 

